ePrints

Dissolution from electrodeposited copper-cobalt-copper sandwiches

Lookup NU author(s): Dr Alasdair CharlesORCiD, Professor Sudipta Roy

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

The electrochemical behaviour of electrodeposited Co-Cu/Cu multilayers from citrate electrolytes was investigated using cyclic voltammetry and stripping techniques at a rotating ring disc electrode. Copper and cobalt-copper alloy sandwiches were deposited from an electrolyte containing 0.0125 M CuSO4, 0.250 M CoSO4 and 0.265 M trisodium citrate at two different pHs, 1.7 and 6.0. The Cu/Co-Cu/Cu sandwich is representative of a single layer in a Co-Cu/Cu multilayer deposit, which is known to exhibit unusual physical and magnetic properties. Results from cyclic voltammetry and detection of dissolving species at the ring showed that cobalt is stripped from a Cu/Co-Cu/Cu sandwich even when a copper layer as thick as 600 nm covers the Co-Cu alloy. Scanning electron microscopy showed that cobalt can dissolve from the deposit easily because the copper layer covering the Co-Cu alloy is porous. A separate series of experiments with Cu/Co-Ni-Cu/Cu sandwich showed that cobalt does not dissolve from these deposits because the addition of nickel stabilises cobalt in the Co-Ni-Cu alloy.

Publication metadata

Author(s): Dulal SMSI, Charles EA, Roy S

Publication type: Article

Publication status: Published

Journal: Journal of Applied Electrochemistry

Year: 2004

Volume: 34

Issue: 2

Pages: 151-158

ISSN (print): 0021-891X

ISSN (electronic): 1572-8838

Publisher: Springer

URL: http://dx.doi.org/10.1023/B:JACH.0000009945.92160.25

DOI: 10.1023/B:JACH.0000009945.92160.25

Altmetrics

Share